Removable Authentication Key for Two-Factor DVR Security
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Solution Overview
Problem
Current digital video recorder (DVR) systems rely on simple password-based authentication for parental control, which is not robust and prone to detection, lacking sufficient security for restricting access to recorded content.
Innovation Solution
Implementing a two-factor authentication system using a removable authentication key that requires both a user-selected password and physical possession of the key, enhancing security by combining 'something you know' with 'something you have', thereby preventing unauthorized access to restricted media content.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If simple password-based authentication is used, then ease of operation is improved, but security is worsened
Solution Approach 1:
The authentication system is segmented into two separate factors: something you know (password) and something you have (authentication key). This segmentation resolves the contradiction by distributing security requirements across multiple independent components, making unauthorized access significantly more difficult while maintaining user convenience through the simple key insertion process.
Solution Approach 2:
A physical authentication key serves as an intermediary device between the user and the DVR system. This intermediary enforces the authentication protocol by requiring both the key's presence and the correct password, thereby strengthening security without significantly complicating the user experience.
2Reliability
If two-factor authentication is implemented, then security is improved, but device complexity is worsened
Solution Approach 1:
The authentication key functionality is extracted as a separate, removable device rather than being integrated into the DVR itself. This extraction reduces the complexity burden on the main DVR system while still providing robust two-factor authentication, as the key handles credential verification independently.
Solution Approach 2:
The authentication key operates as a self-contained device that independently verifies credentials and communicates authentication status to the DVR. This self-service capability reduces the processing burden on the DVR system and simplifies the overall authentication architecture.
Data Source
AI summary
An arrangement is provided in which an authentication key with media content and storage capabilities is configured as a removable module that interoperates with a set top box (“STB”) to enable two-factor authentication to be implemented when authenticating a user to unblock media content recorded by a digital video recorder that is restricted using, for example, parental control or blocking features provided by the STB. The authentication key is also arranged with a memory to store recorded media content that is accessed from the STB which functions as an intermediary, or “proxy” device, to facilitate selecting, receiving, and recording media content from a distribution network. The authentication key is also configured with an onboard video processor that enables the authentication key to perform as a portable media player that can drive, in various illustrative examples, a built-in display device or external presentation devices such as television or monitor.